public void TestCreateFilterShouldReturnFilter()
        {
            _leaf = new BooleanFilterTreeLeaf(string.Empty, _column, true);
            var result = (BooleanFilter)_leaf.CreateFilter();

            Assert.That(result.IncludeTrue, Is.True);
            Assert.That(result.IncludeFalse, Is.False);
        }
 public void SetUp()
 {
     _column = new ColumnBuilder().Build();
     _leaf   = new BooleanFilterTreeLeaf("Test", _column, true);
 }